为了探索生物炭与化肥配施在玉米生产上可行的量-效关系。本研究采用田间试验的方法，设无炭无肥（CK）、常规施肥（F1）、80%常规施肥（F2）、80%常规施肥+20%生物炭（F2B）、70%常规施肥（F3）以及70%常规施肥+30%生物炭（F3B）6个处理。研究了生物炭和肥料配施对土壤有机质、全氮、有效磷、速效钾及玉米不同生育期干物质积累和产量的影响。结果表明：生物炭与肥料配施处理（F2B、F3B）较单施肥处理（F2、F3）在不同程度上提高了土壤有机质、土壤全氮、有效磷、速效钾含量、玉米各生育期干物质量及产量。F2B处理的玉米产量略高于F1处理，但二者差异不显著。由此可见，与常规施肥相比，生物炭与化肥合理配施不但提高了玉米产量，且改善了土壤养分状况。因此，该试验区最佳肥料-生物炭施用量-效配比为80%常规肥+20%生物炭。
英文摘要:
Exploring amount-effect relationship of biochar and chemical fertilizers mixed use in maize production. Designed a field experiment, including six treatments: CK, common fertilization (F1); 80% common fertilization (F2); 80% common fertilization+20% biochar (F2B); 70% common fertilization (F3); 70% common fertilization+30% biochar (F3B). For making clear the efficacy of mixed fertilizers, studied the influence of soil organic matter, total nitrogen, available phosphorus, rapidly available potassium, meanwhile, measured maize dry matter of seedling, jointing, tassel, dough, maturity and harvest different growing times. The results showed that the treatments（F2B、F3B）significantly increased soil organic matter, total nitrogen, available phosphorus, rapidly available potassium and the yield of maize dry matter at different level relative to F2、F3 treatments. The yield of treatment (F2B) indicated slightly higher than F1, but no significant difference. Therefore, Compared with common fertilization, the mixed use of biochar and chemical fertilizer not only increased maize yield, but also improved soil nutrient status. Our results suggested that the mix ratios of biochar and fertilizers at study site was the most optimal: 80% chemical fertilization + 20% biochar.
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